Find the value of P if the line joining P 4 and... - JAMB Mathematics 2001 Question
Find the value of P if the line joining (P, 4) and (6, -2) is perpendicular to the line joining (2, P) and (-1, 3).
A
4
B
6
C
3
D
zero
correct option: d
Hint: If two lines a perpendicular, the gradient of one is equal to minus the reciprocal of the other (P, 4) and (6, -2)
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